DARING climbers inch their way up a cascade of high crystal-blue ice. British climber Tim Emmett, 40, and Dawn Glanc, 38 from Ohio, USA braved sub-zero temperatures on an expedition in Iceland. 3stringsproductionscompany captured this footage of the climbers scaling the ice formations and practicing spectacular ceiling climbs on the Sólheimajökull glacier - a 250-metre thick glacier five miles from the Atlantic Ocean on the Northern Fjords.